/* =========================================================
   カロログ サブページ共通スタイル(計算ツール・コラム・更新履歴)
   トップページ(index.html)と同じ配色・書体に合わせています
   ========================================================= */
:root{
  --cream:#FDF3EC; --cream2:#FBEADF; --paper:#FFFCF9; --white:#fff;
  --cocoa:#2A201B; --cocoa-line:#4A3B32;
  --ink:#3E322C; --body:#5F4E45; --mute:#7D6A60;
  --coral:#E9765B; --coral-lg:#D25E43; --coral-btn:#B94E35; --coral-btn-h:#A3432C; --coral-pale:#FCE3D8; --coral-on-dark:#F08A70;
  --gold:#B8843C; --gold-txt:#8F6529; --gold-soft:#C9A87F; --gold-pale:#EADCC6; --gold-tint:#F8F1E5; --gold-on-dark:#E2B871;
  --green:#2F7A3E; --green-pale:#E2F1E4;
  --line:#F0DFD3; --line2:#E8D5C6;
  --r-s:14px; --r-m:22px; --r-l:32px;
  --sh-m:0 14px 36px rgba(140,92,66,.14);
  --ease:cubic-bezier(.2,.7,.1,1);
  --maxw:1180px; --textw:720px;
  --serif:"Fraunces","Zen Maru Gothic",Georgia,serif;
  --round:"Zen Maru Gothic","Hiragino Maru Gothic ProN",sans-serif;
  --sans:"Noto Sans JP","Hiragino Sans",-apple-system,sans-serif;
  color-scheme:light;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%; overflow-x:clip; scroll-padding-top:84px}
@media (prefers-reduced-motion:no-preference){ html{scroll-behavior:smooth} }
body{margin:0; background:var(--cream); color:var(--ink); font-family:var(--sans); font-size:16px; line-height:1.95;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility; overflow-x:clip; word-break:auto-phrase}
body::before{content:""; position:fixed; inset:0; z-index:100; pointer-events:none; opacity:.05; mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.3 0 0 0 0 0.2 0 0 0 0 0.15 0 0 0 1 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
img{max-width:100%; height:auto; display:block}
::selection{background:#F6D3C4; color:var(--ink)}
a{color:var(--coral-btn); text-underline-offset:3px; text-decoration-thickness:1px}
a:hover{color:var(--coral-btn-h)}
[hidden]{display:none!important}
h1,h2,h3{font-family:var(--round); font-weight:700; margin:0; letter-spacing:.01em; text-wrap:balance; color:var(--ink)}
p{margin:0}
:focus-visible{outline:3px solid var(--gold); outline-offset:3px; border-radius:6px}
.sr-only{position:absolute!important; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap}
.skip{position:absolute; left:12px; top:-60px; z-index:200; background:var(--ink); color:#fff; padding:10px 16px; border-radius:10px}
.skip:focus{top:12px; color:#fff}
.wrap{max-width:var(--maxw); margin:0 auto; padding-inline:clamp(20px,4vw,40px)}
.num{font-family:var(--serif); font-variation-settings:"SOFT" 100,"opsz" 144; font-weight:500; font-feature-settings:"lnum","tnum"}
.nw{white-space:nowrap}

/* ラベル・ボタン・バッジ */
.tag{display:inline-flex; align-items:center; gap:6px; border-radius:999px; padding:4px 11px; font-size:12px; font-weight:700; line-height:1.4; white-space:nowrap}
.tag--free{background:var(--green-pale); color:var(--green)}
.tag--pro{background:var(--gold-pale); color:#7A5420}
.badge{display:inline-block; line-height:0; border-radius:12px; transition:transform .25s var(--ease), box-shadow .25s var(--ease)}
.badge img{height:54px; width:auto}
.badge:hover{transform:translateY(-2px); box-shadow:0 12px 26px rgba(42,32,27,.22)}
.badge--s img{height:44px}
.btn{display:inline-flex; align-items:center; justify-content:center; gap:10px; border-radius:999px; padding:14px 24px; font-weight:700; font-size:15px; line-height:1.3; text-decoration:none; border:0; cursor:pointer; font-family:var(--sans); transition:transform .2s var(--ease), background .2s, box-shadow .2s}
.btn--ghost{background:transparent; color:var(--ink); box-shadow:inset 0 0 0 1.5px var(--line2)}
.btn--ghost:hover{color:var(--ink); box-shadow:inset 0 0 0 1.5px var(--gold-soft); transform:translateY(-2px)}

/* ヘッダー */
.progress{position:fixed; top:0; left:0; height:3px; width:100%; z-index:90; transform-origin:0 50%; transform:scaleX(0); background:linear-gradient(90deg,var(--gold),var(--coral)); pointer-events:none}
header.site{position:sticky; top:0; z-index:80; padding-top:env(safe-area-inset-top,0px); background:rgba(253,243,236,.88); backdrop-filter:saturate(1.4) blur(14px); -webkit-backdrop-filter:saturate(1.4) blur(14px); box-shadow:0 1px 0 var(--line)}
.hdr{max-width:var(--maxw); margin:0 auto; padding:12px clamp(20px,4vw,40px); display:flex; align-items:center; gap:22px}
.brand{display:flex; align-items:center; gap:10px; margin-right:auto; text-decoration:none}
.brand img{width:34px; height:34px; border-radius:10px}
.brand b{font-family:var(--round); font-weight:900; font-size:19px; color:var(--ink); letter-spacing:.04em}
.brand small{font-family:var(--serif); font-variation-settings:"SOFT" 100; font-size:13px; color:var(--mute); letter-spacing:.06em}
.nav{display:flex; gap:24px; font-size:13.5px; font-weight:500}
.nav a{color:var(--ink); text-decoration:none; position:relative}
.nav a::after{content:""; position:absolute; left:0; right:0; bottom:-4px; height:1.5px; background:var(--gold); transform:scaleX(0); transform-origin:left; transition:transform .3s var(--ease)}
.nav a:hover::after,.nav a[aria-current="page"]::after{transform:scaleX(1)}
.hdr-get{font-size:13px; padding:10px 18px; background:var(--ink); color:#fff; white-space:nowrap}
.hdr-get:hover{background:#000; color:#fff}
@media(max-width:860px){ .nav{display:none} }
@media(max-width:420px){ .brand small{display:none} }

/* パンくず */
.crumbs{font-size:12.5px; color:var(--mute); padding-top:22px}
.crumbs ol{list-style:none; margin:0; padding:0; display:flex; flex-wrap:wrap; gap:6px}
.crumbs li+li::before{content:"／"; margin-right:6px; color:var(--line2)}
.crumbs a{color:var(--mute); text-decoration:none}
.crumbs a:hover{color:var(--coral-btn)}

/* ページ見出し */
.phead{padding-block:clamp(36px,5vw,64px) clamp(28px,4vw,44px)}
.kicker{display:flex; align-items:center; gap:12px; font-family:var(--serif); font-variation-settings:"SOFT" 100,"opsz" 12; font-size:13px; letter-spacing:.16em; text-transform:uppercase; color:var(--gold-txt); font-weight:500}
.kicker::after{content:""; height:1px; width:44px; background:currentColor; opacity:.5}
.phead h1{margin-top:18px; font-size:clamp(30px,4.6vw,54px); line-height:1.32; max-width:22em}
.phead .lede{margin-top:20px; font-size:clamp(15.5px,1.45vw,18px); line-height:2; color:var(--body); max-width:38em}
.meta{margin-top:22px; display:flex; flex-wrap:wrap; gap:6px 18px; font-size:13px; color:var(--mute)}
.meta span{display:inline-flex; align-items:center; gap:6px}
.meta span::before{content:""; width:6px; height:6px; border-radius:50%; background:var(--gold-soft)}

/* 記事レイアウト */
.article-grid{display:grid; grid-template-columns:minmax(0,1fr) 250px; gap:clamp(32px,5vw,72px); align-items:start; padding-bottom:clamp(64px,8vw,110px)}
.toc{position:sticky; top:96px; font-size:13.5px; border-left:1.5px solid var(--line2); padding-left:18px}
.toc p{font-family:var(--serif); font-variation-settings:"SOFT" 100; letter-spacing:.14em; font-size:12px; color:var(--gold-txt); text-transform:uppercase}
.toc ol{list-style:none; margin:12px 0 0; padding:0; display:grid; gap:10px}
.toc a{color:var(--body); text-decoration:none; line-height:1.6; display:block}
.toc a:hover,.toc a.on{color:var(--ink)}
.toc a.on{font-weight:700}
@media(max-width:980px){ .article-grid{grid-template-columns:minmax(0,1fr)} .toc{display:none} }

.prose{max-width:var(--textw); font-size:16.5px; line-height:2.05; color:var(--body)}
.prose>*+*{margin-top:1.15em}
.prose h2{margin-top:2.6em; font-size:clamp(22px,2.6vw,29px); line-height:1.5; color:var(--ink); display:flex; gap:14px; align-items:baseline; scroll-margin-top:96px}
.prose h2 .no{font-family:var(--serif); font-variation-settings:"SOFT" 100,"opsz" 144; font-weight:400; color:#A06F2C; font-size:1.15em; flex-shrink:0}
.prose h3{margin-top:2em; font-size:clamp(18px,2vw,21px); line-height:1.6; color:var(--ink)}
.prose strong{color:var(--ink); font-weight:700; background:linear-gradient(transparent 62%, rgba(233,118,91,.18) 62%)}
.prose ul,.prose ol{padding-left:1.4em}
.prose li+li{margin-top:.45em}
.prose li::marker{color:var(--gold)}
.prose small{font-size:13px; color:var(--mute)}
.prose sup a{text-decoration:none; font-size:.75em; padding-inline:1px}

.keys{background:var(--paper); border-radius:var(--r-m); box-shadow:inset 0 0 0 1px var(--line); padding:24px 26px 22px; margin-top:0}
.keys p.t{font-family:var(--round); font-weight:700; color:var(--ink); font-size:16px}
.keys ul{margin:12px 0 0; padding:0; list-style:none; display:grid; gap:10px}
.keys li{position:relative; padding-left:26px; line-height:1.85; color:var(--ink)}
.keys li::before{content:""; position:absolute; left:0; top:.55em; width:14px; height:14px; border-radius:50%; background:var(--gold); box-shadow:inset 0 0 0 3px var(--paper), 0 0 0 1px var(--gold)}

.note{display:flex; gap:14px; align-items:flex-start; background:var(--gold-tint); border-radius:var(--r-m); padding:18px 20px}
.note img{width:56px; height:56px; border-radius:16px; background:var(--paper); flex-shrink:0}
.note p{font-size:15px; line-height:1.9; color:var(--ink)}
.note b{font-family:var(--round)}

.formula{background:var(--cocoa); color:#F3E6DB; border-radius:var(--r-m); padding:22px 24px; font-size:15px; line-height:1.9; overflow-x:auto}
.formula p+p{margin-top:6px}
.formula .lbl{display:block; font-size:12px; letter-spacing:.08em; color:var(--gold-on-dark); font-weight:700; margin-bottom:6px}
.formula code{font-family:var(--sans); font-weight:700; color:#fff}

.tbl{overflow-x:auto; -webkit-overflow-scrolling:touch; border-radius:var(--r-s); box-shadow:inset 0 0 0 1px var(--line)}
.tbl table{border-collapse:collapse; width:100%; min-width:0; font-size:14.5px; background:#fff}
.tbl th,.tbl td{padding:11px 14px; text-align:left; border-bottom:1px solid var(--line); line-height:1.7}
.tbl thead th{background:var(--gold-tint); color:var(--ink); font-weight:700; white-space:nowrap}
.tbl tbody tr:last-child td{border-bottom:0}
.tbl td.r,.tbl th.r{text-align:right; font-variant-numeric:tabular-nums}
.tbl caption{caption-side:bottom; text-align:left; font-size:12.5px; color:var(--mute); padding:10px 4px 0}

figure.fig{margin:1.6em 0 0; background:#fff; border-radius:var(--r-m); box-shadow:inset 0 0 0 1px var(--line); padding:20px}
figure.fig svg{width:100%; height:auto; display:block}
figure.fig figcaption{margin-top:12px; font-size:13px; color:var(--mute); line-height:1.75}
.legend{display:flex; flex-wrap:wrap; gap:16px; font-size:12.5px; color:var(--mute); margin-bottom:6px}
.legend span{display:flex; align-items:center; gap:7px}
.legend .dt{width:8px; height:8px; border-radius:50%; background:#C9B5A6}
.legend .tl{width:18px; height:3px; border-radius:2px; background:var(--coral)}

.refs{font-size:13.5px; line-height:1.8; color:var(--body); padding-left:1.6em}
.refs li+li{margin-top:.6em}
.refs a{word-break:break-all}

.author{display:flex; gap:16px; align-items:center; margin-top:3em; padding-top:28px; border-top:1px solid var(--line2)}
.author img{width:56px; height:56px; border-radius:16px}
.author b{display:block; font-family:var(--round); color:var(--ink); font-size:15.5px}
.author span{display:block; font-size:13px; color:var(--mute); line-height:1.75}
.disc{font-size:12.5px; line-height:1.9; color:var(--mute); margin-top:22px}

/* よくある質問 */
.faq{border-top:1px solid var(--line2)}
.faq details{border-bottom:1px solid var(--line2)}
.faq summary{list-style:none; cursor:pointer; display:flex; justify-content:space-between; gap:20px; align-items:center; padding:20px 2px; font-family:var(--round); font-weight:700; font-size:clamp(16px,1.6vw,18px); color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary i{flex-shrink:0; width:30px; height:30px; border-radius:50%; box-shadow:inset 0 0 0 1px var(--line2); position:relative; transition:background .3s}
.faq summary i::before,.faq summary i::after{content:""; position:absolute; left:50%; top:50%; width:11px; height:1.6px; background:var(--gold-txt); transform:translate(-50%,-50%)}
.faq summary i::after{transform:translate(-50%,-50%) rotate(90deg); transition:transform .35s var(--ease)}
.faq details[open] summary i{background:var(--gold-tint)}
.faq details[open] summary i::after{transform:translate(-50%,-50%) rotate(0)}
.faq .a{padding:0 2px 22px; font-size:15.5px; line-height:2; color:var(--body)}

/* アプリへの案内 */
.cta{position:relative; overflow:hidden; background:var(--cocoa); color:#E9D9CC; border-radius:var(--r-l); padding:clamp(28px,4vw,44px); display:grid; grid-template-columns:minmax(0,1fr) auto; gap:20px 28px; align-items:center; margin-top:3em}
.cta::before{content:""; position:absolute; inset:0; background:radial-gradient(70% 90% at 100% 100%, rgba(240,138,112,.28), transparent 60%), radial-gradient(50% 60% at 0% 0%, rgba(226,184,113,.16), transparent 70%); pointer-events:none}
.cta>*{position:relative}
.cta p.t{font-family:var(--round); font-weight:900; font-size:clamp(20px,2.4vw,26px); color:#FDF3EC; line-height:1.5}
.cta p.s{margin-top:8px; font-size:14.5px; line-height:1.9; color:#C9B5A6}
.cta .go{margin-top:18px; display:flex; flex-wrap:wrap; align-items:center; gap:10px 16px}
.cta .go small{font-size:12.5px; color:#B8A294}
.cta .disc-k{width:120px; height:120px; border-radius:50%; overflow:hidden; display:flex; align-items:flex-end; justify-content:center; background:radial-gradient(circle at 50% 38%, #FFF6EF 0%, #F1D3C0 100%)}
.cta .disc-k img{width:94%}
@media(max-width:620px){ .cta{grid-template-columns:1fr} .cta .disc-k{width:88px; height:88px; order:-1} }

/* カード一覧 */
.cards{display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:18px}
.card{display:flex; flex-direction:column; background:#fff; border-radius:var(--r-m); box-shadow:inset 0 0 0 1px var(--line); padding:24px 24px 22px; text-decoration:none; color:inherit; transition:transform .3s var(--ease), box-shadow .3s}
.card:hover{transform:translateY(-3px); box-shadow:var(--sh-m), inset 0 0 0 1px var(--gold-soft); color:inherit}
.card .c-kicker{font-size:12px; font-weight:700; color:var(--gold-txt); letter-spacing:.06em}
.card h3{margin-top:10px; font-size:19px; line-height:1.55}
.card p{margin-top:10px; font-size:14px; line-height:1.85; color:var(--body)}
.card .more{margin-top:auto; padding-top:16px; font-size:13.5px; font-weight:700; color:var(--coral-btn)}
.related{padding-block:clamp(48px,6vw,80px); border-top:1px solid var(--line)}
.related h2{font-size:clamp(20px,2.2vw,24px); margin-bottom:22px}

/* フッター */
footer.site{border-top:1px solid var(--line); padding-block:48px calc(48px + env(safe-area-inset-bottom,0px)); background:var(--cream)}
.foot{display:grid; grid-template-columns:1.2fr 1fr; gap:28px 48px; align-items:start}
.foot .disc{margin-top:16px; max-width:42em}
.flinks{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:10px 24px; font-size:14px}
.flinks a{color:var(--ink); text-decoration:none}
.flinks a:hover{color:var(--coral-btn)}
.copy{margin-top:36px; padding-top:20px; border-top:1px solid var(--line); display:flex; flex-wrap:wrap; justify-content:space-between; gap:12px; font-size:12px; color:var(--mute)}
@media(max-width:760px){ .foot{grid-template-columns:1fr} }

/* 出現アニメーション */
@media (prefers-reduced-motion:no-preference){
  .js .rv{opacity:0; transform:translateY(22px); transition:opacity .8s var(--ease), transform .8s var(--ease); transition-delay:var(--d,0s)}
  .js .rv.is-in{opacity:1; transform:none}
}